text: // Boost.Range library
  //
  //  Copyright Thorsten Ottosen 2003-2004. Use, modification and
  //  distribution is subject to the Boost Software License, Version
  //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
  //  http://www.boost.org/LICENSE_1_0.txt)
  //
  // For more information, see http://www.boost.org/libs/range/
  //
  
  #ifndef BOOST_RANGE_DETAIL_COMMON_HPP
  #define BOOST_RANGE_DETAIL_COMMON_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif
  
  #include <boost/range/config.hpp>
  #include <boost/range/detail/sfinae.hpp>
  #include <boost/type_traits/is_void.hpp>
  #include <boost/type_traits/detail/ice_or.hpp>
  #include <boost/mpl/if.hpp>
  #include <boost/mpl/int.hpp>
  #include <cstddef>
  
  //////////////////////////////////////////////////////////////////////////////
  // missing partial specialization  workaround.
  //////////////////////////////////////////////////////////////////////////////
  
  namespace boost 
  {
      namespace range_detail 
      {        
          // 1 = std containers
          // 2 = std::pair
          // 3 = const std::pair
          // 4 = array
          // 5 = const array
          // 6 = char array
          // 7 = wchar_t array
          // 8 = char*
          // 9 = const char*
          // 10 = whar_t*
          // 11 = const wchar_t*
          // 12 = string
          
          typedef mpl::int_<1>::type    std_container_;
          typedef mpl::int_<2>::type    std_pair_;
          typedef mpl::int_<3>::type    const_std_pair_;
          typedef mpl::int_<4>::type    array_;
          typedef mpl::int_<5>::type    const_array_;
          typedef mpl::int_<6>::type    char_array_;
          typedef mpl::int_<7>::type    wchar_t_array_;
          typedef mpl::int_<8>::type    char_ptr_;
          typedef mpl::int_<9>::type    const_char_ptr_;
          typedef mpl::int_<10>::type   wchar_t_ptr_;
          typedef mpl::int_<11>::type   const_wchar_t_ptr_;
          typedef mpl::int_<12>::type   string_;
          
          template< typename C >
          struct range_helper
          {
              static C* c;
              static C  ptr;
  
              BOOST_STATIC_CONSTANT( bool, is_pair_                = sizeof( boost::range_detail::is_pair_impl( c ) ) == sizeof( yes_type ) );
              BOOST_STATIC_CONSTANT( bool, is_char_ptr_            = sizeof( boost::range_detail::is_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
              BOOST_STATIC_CONSTANT( bool, is_const_char_ptr_      = sizeof( boost::range_detail::is_const_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
              BOOST_STATIC_CONSTANT( bool, is_wchar_t_ptr_         = sizeof( boost::range_detail::is_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
              BOOST_STATIC_CONSTANT( bool, is_const_wchar_t_ptr_   = sizeof( boost::range_detail::is_const_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
              BOOST_STATIC_CONSTANT( bool, is_char_array_          = sizeof( boost::range_detail::is_char_array_impl( ptr ) ) == sizeof( yes_type ) );
              BOOST_STATIC_CONSTANT( bool, is_wchar_t_array_       = sizeof( boost::range_detail::is_wchar_t_array_impl( ptr ) ) == sizeof( yes_type ) );
              BOOST_STATIC_CONSTANT( bool, is_string_              = (boost::type_traits::ice_or<is_const_char_ptr_, is_const_wchar_t_ptr_>::value ));
              BOOST_STATIC_CONSTANT( bool, is_array_               = boost::is_array<C>::value );
              
          };
          
          template< typename C >
          class range
          {
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_pair_,
                                                                    boost::range_detail::std_pair_,
                                                                    void >::type pair_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_array_,
                                                                      boost::range_detail::array_,
                                                                      pair_t >::type array_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_string_,
                                                                      boost::range_detail::string_,
                                                                      array_t >::type string_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_char_ptr_,
                                                                      boost::range_detail::const_char_ptr_,
                                                                      string_t >::type const_char_ptr_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_ptr_,
                                                                      boost::range_detail::char_ptr_,
                                                                      const_char_ptr_t >::type char_ptr_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_wchar_t_ptr_,
                                                                      boost::range_detail::const_wchar_t_ptr_,
                                                                      char_ptr_t >::type const_wchar_ptr_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_ptr_,
                                                                      boost::range_detail::wchar_t_ptr_,
                                                                      const_wchar_ptr_t >::type wchar_ptr_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_array_,
                                                                      boost::range_detail::wchar_t_array_,
                                                                      wchar_ptr_t >::type wchar_array_t;
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_array_,
                                                                      boost::range_detail::char_array_,
                                                                      wchar_array_t >::type char_array_t;
          public:
              typedef BOOST_RANGE_DEDUCED_TYPENAME   boost::mpl::if_c< ::boost::is_void<char_array_t>::value,
                                                                      boost::range_detail::std_container_,
                                                                      char_array_t >::type type;  
          }; // class 'range' 
      }
  }
          
  #endif
  
  